Granted Patent
Utility
US 6,218,073 · App. 09/271,369
Heat sensitive composition, original plate using the same for lithographic printing plate, and process for preparing printing plate
Inventors:
Shinji Shimizu, Yasuyuki Watanabe, Yasuhiko Kojima, Koji Oe, Nansei Tasiro
Patented Case
View Patent ↗
Granted: Apr 17, 2001
Filed: Mar 18, 1999
Inventors
Shinji Shimizu
Yasuyuki Watanabe
Yasuhiko Kojima
Koji Oe
Nansei Tasiro
Assignee (at issue)
Dainippon Ink and Chemicals, Inc.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.